ArticleAnimals : an open access journal from MDPI2026
Associations Among Piglet Characteristics, Farrowing Kinetics, and Stillbirth Risk in Hyperprolific Sows.
Article in Animals : an open access journal from MDPI, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Stillbirth remains a major cause of piglet loss in hyperprolific sow herds. This observational study investigated the effects of farrowing kinetics, including birth weight (BW), birth order (BO), and expulsion interval (EI), on stillbirth risk. Data from 117 crossbred sows between Landrace sires and Yorkshire dams and 1726 piglets were analyzed using linear mixed models (LMM) and generalized linear mixed models (GLMM), with sow included as a random effect to account for litter clustering. BW, BO, time of farrowing (TF), and EI were categorized into three (BWG, low, medium, high), four (BOQ, Q1-Q4), four (H1-H4), and seven (≤5, 6-10, 11-15, 16-20, 21-30, 31-45, and >45 min) groups, respectively. BWG were not associated with BO (
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